I could have sworn I had already tried C"exp.heater3" but this time around it's working. Not ideal for my current wire length but at least it's working!

Thank you @Phaedrux !

@Phaedrux said in Duet 2 Wifi Servo Control:

C"!^e1heat"

No joy. M280 P0 S10 and M280 P0 S100 both result in no movement, same with S1000 and S2000.

I've made myself kind of a DIY BLTouch in form, functionally identical to the Tiny Touch (https://grabcad.com/library/tiny-touch-nmpg-1) but in a different form factor. Before I even got as far as configuring the rest of it, I was trying to get the servo working under manual control.

I also just tried with M950 S0 C"!e1heat" and no luck.

M98 P"config.g" returns:

HTTP is enabled on port 80
FTP is disabled
TELNET is disabled
Warning: Heater 0 appears to be over-powered. If left on at full power, its temperature is predicted to reach 365C
Warning: Heater 0 appears to be over-powered. If left on at full power, its temperature is predicted to reach 237C
Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 1279C

Full config.g:

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up

; General preferences
G90                                                       ; send absolute coordinates...
M83                                                       ; ...but relative extruder moves
M550 P"E-Bot"                                             ; set printer name
M669 K1                                                   ; select CoreXY mode

; Network
M552 S1                                                   ; enable network
M586 P0 S1                                                ; enable HTTP
M586 P1 S0                                                ; disable FTP
M586 P2 S0                                                ; disable Telnet

; Drives
M569 P0 S1                                                ; physical drive 0 goes forwards
M569 P1 S1                                                ; physical drive 1 goes forwards
M569 P2 S1                                                ; physical drive 2 goes forwards
M569 P3 S1                                                ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3                                          ; set drive mapping
M350 X16 Y16 Z16 E16 I1                                   ; configure microstepping with interpolation
M92 X200.00 Y200.00 Z800.00 E837.00                       ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00                       ; set maximum instantaneous speed changes (mm/min)
M203 X9000.00 Y9000.00 Z3000.00 E3600.00                  ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z250.00 E250.00                      ; set accelerations (mm/s^2)
M906 X1200 Y1200 Z1200 E800 I30                           ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                                   ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                                          ; set axis minima
M208 X230 Y240 Z249 S0                                    ; set axis maxima

; Endstops
M574 X2 S1 P"xstop"                                       ; configure active-high endstop for high end on X via pin xstop
M574 Y1 S1 P"ystop"                                       ; configure active-high endstop for low end on Y via pin ystop
M574 Z2 S1 P"zstop"                                       ; configure active-high endstop for high end on Z via pin zstop

; Z-Probe
M950 S0 C"e1heat"                                         ; create servo pin on e1heat
M558 P9 C"^zprobe.in" H5 F120 T6000                       ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X0 Y0 Z2.5                                       ; set Z probe trigger value, offset and trigger height
M557 X15:215 Y15:225 S20                                  ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B3950            ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                                     ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B0 S1.00                                          ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0                                                   ; map heated bed to heater 0
M143 H0 S120                                              ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8    ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                                      ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00                                          ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S290                                              ; set temperature limit for heater 1 to 290C

; Fans
M950 F0 C"fan0" Q500                                      ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1                                            ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                                      ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H-1                                            ; set fan 1 value. Thermostatic control is turned off

; Tools
M563 P0 D0 H1 F0                                          ; define tool 0
G10 P0 X0 Y0 Z0                                           ; set tool 0 axis offsets
G10 P0 R0 S0                                              ; set initial tool 0 active and standby temperatures to 0C

; Heater PID values
M307 H0 A212.9 C513.5 D1.1 S1.00 V24.3 B0
M307 H1 A1254.6 C478.3 D4.7 S1.00 V24.2 B0

; Pressure advance - Calibrated with eSun/Inland PETG @ 240C
M572 D0 S0.06

; Custom settings are not defined

I'm having trouble getting a servo to work. I have a super small 1.5g ultra micro servo that is used in RC aircraft, usually for landing gear. It works with the standard Arduino servo library on a Leonardo, so I know it's both wired correctly (in the broadest sense) and functions as expected. I've also tried all of the below with a SG90 9g servo that I've seen others use with the same results.

I have it plugged into a 5V and GND headers, with the signal wire run to E1Heater - I've tried both terminals, just in case I was reading the wiring diagram wrong.

I'm running a Duet 2 Wifi v1.03 on RRF 3.1.1, WiFi server 1.23.

I attempt to start the PWM signal with

M950 S0 C"e1heat"

and then command the servo position with

M280 P0 Snn

where 'nn' is... pretty much every number. I've tried both low numbers to command angle and high numbers to set the uS directly.

I have also tried specifying the (standard, as far as I can tell) 50Hz frequency with

M950 S0 C"e1heat" Q50

I've also tried using exp1.heater3 with the same results.

Unfortunately, none of these are having any effect at all. I must be missing something, probably something obvious, and am hoping someone here can help.